festival in june where we convened a panel called head games, can foot all save itself from itself and jim brown, the nfl legendary, the legendary nfl running back was on the panel and dan garza, professor at stanford who has worked on mouthguard technology that can measure the force of impacts on the head and kevin turner who was the subject of documentary which you will see a clip of it called american man produced by a colleague of mine who works at hbo. so, this panel will be featured in a show on the world channel on november 20 at 8:00 p.m. and on line as well. pbs is working with, public television is working with the aspen institute to turn this into a one-hour session. there will be a whole one-hour session which will include conversations about football safety but we are going to play about a ten-minute clip of that. [no audio] [inaudible conversations] let's come back to it. sorry about that. so what i would like to do now is start off this conversation about the under 14 question, the pre-high school equation and i would like to do that with our special guest, dr. robert cantu who ma